Justin Bieber took a humiliating tumble while performing in front of an audience in Saskatoon, Canada on Thursday night. The Canadian artist was striding over the phase when he significantly tumbled down a trap entryway. His tumble from the stage goes ahead the heels of a clamorous couple of months for the vocalist. He's wiped out meet-and-welcomes with fans, meandered Boston shoeless and got into a dust-up in Cleveland.